Build agentic systems that automatically optimize campaigns on an advertiser"s behalf, working holistically across every control they have (targeting, bids, budgets, and placements) rather than one lever at a time, and generalizing across many campaign types and advertiser goals, from scaling a proven product to reaching new customers and launching something new. Push the frontier of agent design, building the core of the agent itself: planning, tool use (for example, auction simulation, ML models, and optimization routines), and long-horizon reasoning across decisions that interact, and writing the production-quality, critical-path code that carries it from prototype to launch.